Anchor.



E. R. MERRILL.

ANCHOR. APPLIOTION FILED 11111221, 1911.

I Patented Dec. 17., 1,912.

@mm1/Moz @7M Hof/11mg anchored.' Previously these cables have vbeenanchored by means of screw jacks extending room iny which the machineisto be op- ,Which tlie following is a specification, ref- 'bers withinthe hole will be separated from -view of t-he top section of theexpandingl UNrilED srA'rEs rarnnrnicn.

EDWIN R. MERRILL, OF COLUMBUS, OHIO, ASSIGNOR T0 THE JEFFREY MANUFACTUR-ING COMPANY, A CORPORATION OF OHIO.

ANCHOR.

To @Zlio/icm it may concern.' y

Be it known that I, EDWIN R. MERRILL, a citizen of the United vStates,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful ImprovementsV in Anchors, of

erence being had therein to the accompanying drawing.

This invention relates to improvements in anchors and in particular toan expansion type adapted to be placed within a hole and retainedtherein by pressure exerted on its outer end.

'The device is composed of two members connected at their outer ends bya link, one end of which is formed into a hook. The two membersareplaced within a previously formed hole, and when pressure is brought tobearupon the hook portion, the two memeach other thus securely grippingthe walls and preventing removal of the anchor.

A furtheradvantage of t-he device is the provision of means by which itmay be easily withdrawn from the hole when pressure is removed from thehook.

This anchor is 'desi ed particularly for use with short'wall miningmachines where the haul and guide cables must be rigidly from the Hoorto the roof of t-he erated.

This invention provides a device which may be used to anchor the cablessecurely with much less eX enditure of labor than is necessary inplacing the old type of jacks and, furthermore, may... be used in roomswhere theroof is too highv to allow they use of such jacks.

Figure l is a partial sectional view through the wall in a room in acoal mine showing the anchor in its expanded position- Fig.' 2 is a sideelevation showing theanchor in its 'unex andenl position as it is placedwithin,y a ho e. Fig. 3 a plan.A

members. Fig. 4 is a plan view .of th( lower section of the expandingmembers, and Fig. 5 is an end elevation of t-he connecting link andhook.

Specification of Letters Patent.

Application led June 21, 1911.

Referring to the drawing by charactersJ `Pettelite Dec. 1'7, 1912.serial No. 634,520.,

of reference, the numerals 1 and 2 represent, respectively, the upperand lower sectionsvor members, of an anchor connected at their outerends by fork link 3. The inner ends 4 and 5 cfg-the twomembers whenplaced together fornil an approximate. cylinder, the juncture of the-two members being an incline. plane asat-{extendin'g from the` upperinner end of the cylinder downward to approximately one-third the lengthoi the member. The outer ends of the two members are tapered inward in'a horizontal plane from the lower end of the inclined surface toapproximate square cross sections at 7 and 8. The two sect-ions areJoined near their outer ends by means of the ,fork link 3 vwhichstraddles the twoends and is connected to them' by means of the .'pins9. The lower end of the fork link is formed into a .hook 10 to which maybe attached a cable 11. From this it will be seen that when the ancho-ris placed within a vhole of approximately the same size as the cylinderformed by the two ends 4 and 5 of the members 1 and '2, and a pressureis ex- 1 erted on the.. hook 10 away from the surface in which t-heanchor is inserted, the tendency" will be to swing the outer end of themember 1 about the lower pin 9 :is an axis. This will force the uppersectionl 1 .inward and upward on the inclined plane represented by the`numeral `The consequent` separation vof the two parts will result-in arigid gripping of the wallsv ot the hole, thus preventing the removalofthe anchor. Corrugations or ribs 12 are provided to 'further aidthewedsrinfr'action in seciireliv gripping the walls ofthe hole?- To aidin the insertion as well as the removal of the jack from a hole. the endof the lower section 2 -is extended in a. iiub 12% which projectsslight] y beyond the fork link 3, the end of the upper section 1 beingturnedupward at'right angles to the section thereby forming a.projection 14.

To place the anchor within a hole, the

hook on lthe fork line i3 is swung inwardly, y

i' sisting of two members adapted to extendy* eisting of'twomembers-'adaptedfto' :extend 4said members.

` sisting' of two members adapted to extend 4the-two sections within thehole and securely retain the anehor within the hole. It

1s evident that the Harder the pull upon.

and release its hold upon the material. A pinch bar or othersuitablelever Ais' then inserted between the upturned projection 14Y'and the wall iri which the anchor is located.

.trated in Fig. 2.

"I .desire torotect by LettersfPatent'.is:--`

within an aperture, alink to which the outerl ends of the members are inan inclined plane.

lthe hook; force. .l

To withdraw the device,rit isrst necessary to remove all tension uponthe hook, after which a sharp blow uponthe nub 13 will drive the lowersection 1n, consequent-ly allowing` the upper section :to-'drop down thegreater `will be thegripping Outward pressure upon this projection willthen materially aid in removing the anchor' as it not only tends to drawtheentire device out ofthe hole, but also tends tp -force the two'sectionsl l and 2 togetherfas illus# Having thus describedmyvinvention, 1. An yanc orof the class described con'-v within anaperture, a liiikr'pivotedfto: the

outer ends of the members-,a hook formed on one end of thel link, theadjaeentsurfacesj' of the inner ends ofthe section p v ber havinganinclined surface. in vengageinclined planes, substantiallyl as set Iforth,

2. Anv anchor ofAv the classfdesr'z'rilied conwithin an apertureg'alinktowhichA the outer ends ofthe membersarepiVoted, a hookmeansl forseparating the 'endsL oltfhelf An anchor of the class described 'coi-isnsisting ofv two members adaptedto extend..

ivoted, a. hook formed on one end of the'jl nk, and the sur-fface of theinner end of one of ythe members which is-adiacent the other memberformed 4.' An anchorof the class described con'-l within an aperture, alink to which the outer endsof these menfbe'rs are pivoted, a hookformed on one` end of the link, means for separating the innerends ofthe members,

1 ber, andi a :lever ivoted to oiie end of and a nub extendingifrom theouter end the member adjacent the hook. v -5. An anchor of the classdescribed con'- Sisting of .two members adapted to extend -1 within anaperture, a link to which the outer ends of the members are. pivoted, ahook formed on one end of the link, means for separating the inner endsof the members, and an upward extension. formed on the end of the memberfarthest removed from the hook. I,

6. vAn anchor of the class ldescribed consisting of two members adaptedto extend v 'within an aperture, a forked link within which thel outer,ends otl the members are pivted, ya hook formedl on one end of the'link, the surface-of theinner end offene of v the members l,adjacent theother l,member formed in an inclined plane, transverse cor- Arulgfationson the inner ends of the members,' 7o

the` outer end ofthe kmember farthest from the hook-formed upward in anlextension, and the end ofthe' member adiacent the-shook extended in theformi da nub, substantially Vassetjorth. i

7. An ancherofiiie" 'dass dsrib'ea eenin an aperture, the inner part oione mem-l" mentvwith the inner-end of the other mem .80

members for' sli ing o ne member inward .uponthe other. 1

. '8.jInan anchorjofzthe class described, the .combination of twomembers adapted to be 85 ,positionedjsubstantially-parallel within anaperture',- the innerfpartof one of the membeis having' an inclined'surface in engage-v' meritv with the inner end 'ofthe ot1fie1f-1uem`ber, and connectingmeansbetween the mem- 9'0 bersautomaticallytendingto cause substan-v v tial-movement'ef one 'of themembers lon itudi'nally relative tothe ther, and means' or securing a(leuk-:eteVv be anchored.

.In testimon whereof I affix. my Signatme v WIN R.. VVitnessesj.i

H. B. ALEXANDER, Denier T.,F1sHER.

inpresenee o 'tw lwitnesses. v I n. v MERRLL' Ubpi'es oi this patent mayvbeobtanecl for five cents each, by addressing theit Oomnilssioiier oPatente Washing-ton, -D. G.

sisting ofmembers-adaptedto extend. with. i

said j

